It goes a lot deeper than what it 'looks like' or even what you are doing (ie: arrangement dictates the energy levels through out the spectrum), so without hearing it, there's not real way to help out...

I have some questions aboutfinal mastering proces...or mixing i don't know....

about limiting

here some pictures from wave lab

1st one is Pro mix artist Dave MartonCandian Guitarist

2nd is my mix but my limiter always

CUT out peaks

this is hapen when i try to get some Loudness

-12 RMS or -11 rms

Your RMS on demo 1 is -9.25dB on the left and -9.37dB on the right, from my calculations.

Quote:

I push treshold on my limiter but my peaksbegin look ugly......I'm have lack of knowledge of Ifundamental rules in

Don't worry how the waveform looks, use your ears. Your peak is -.09 on the mp3. Using a 3 consecutive sample over setting you only have 10 possible samples clipping on L and 3 on R, these are possible clips not audible ones and par for the course on -09dB output when mp3'd. I zoomed into the hottest samples and can read most of each peak below the zero line. Even the mp3 encoding is not causing audible distortion, the samples move by too fast to be perceived as distortion and you don't have more than one of the 10 L and 3 R samples clipping, anywhere on the song at a time.

Quote:

Exporting levels in my CUBASE SX , mixing levels in output bus

You know......

Here in Bulgaria There is no place where to studybasis of mixing and exporting andmastering....

I'd check the accuracy of Wavelab, it shows the right side as being hotter when it's not, from my calculations, but hard to really know from your view angles which are way too compact. My suggestion is don't worry about the waveform. If you suspect clipping, zoom in to the clipped section and see how many samples hit above -0dB. You have the full view of the song in these Wavelab charts and the sides of your view pushed in to where the whole clip is only about 7 cm's wide. This may possibly be misleading you into thinking that there is clipping when there is none. People need to realize that editing by waveform is variably limited to pixel count and other display configuration factors, that are graphical and don't have anything to do with the audio itself.

As far as giving you compression starting points, which would boil down to preference, try this: Leave the C4 out of the chain and just L2 it. A/B it with the C4 on and off. If you can't get it to sound better with the C4 in the chain, leave it off. Don't think that you have to use multi-band compression everytime that you master, use your ears first and work on learning how to associate waveform view, with what's really happening with the audio. Different view angles wide/narrow/full-display-view/zoom-in/zoom-out, will all give you different impressions, if you don't setup the waveform view accurately.